<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <style type="text/css">
    body{
      margin:0px auto;
    }
    #picture1 {
      position: absolute;
      left: 50%;
      top: 35%;
      transform: translate(-50%, -50%);
    }
  </style>
  <title></title>
 </head>
 <body>
  <div id="picture1">
   <img src="./images/loading.gif" />
  </div>
 </body>
</html>
